Almost 19 hours after the “top kill” process of pumping mud and viscous liquid into the broken oil well in the Gulf, officials are claiming the process has worked. The main challenge had been to overcome the pressure of the oil spewing upward from the sub-sea reservoir. The first ship containing 50,000 barrels of the mud mixture reportedly ran out early Thursday, although a second boat was on the way. Coast Guard officials and BP engineers on the scene said they were hopeful the process could be labeled a full success once cement was pumped in to fully block the pipe within the next few hours.